305 lines
9.1 KiB
C
305 lines
9.1 KiB
C
/* PR tree-optimization/86552 - missing warning for reading past the end
|
|
of non-string arrays
|
|
{ dg-do compile }
|
|
{ dg-options "-O2 -Wall -ftrack-macro-expansion=0" } */
|
|
|
|
extern __SIZE_TYPE__ strlen (const char*);
|
|
|
|
const char a[5] = "12345"; /* { dg-message "declared here" } */
|
|
|
|
int v0 = 0;
|
|
int v1 = 1;
|
|
volatile int v2;
|
|
|
|
void sink (int, ...);
|
|
|
|
#define CONCAT(a, b) a ## b
|
|
#define CAT(a, b) CONCAT(a, b)
|
|
|
|
#define T(str) \
|
|
__attribute__ ((noipa)) \
|
|
void CAT (test_, __LINE__) (void) { \
|
|
int i0 = 0, i1 = i0 + 1, i2 = i1 + 1, i3 = i2 + 1; \
|
|
sink (strlen (str), i0, i1, i2, i3); \
|
|
} typedef void dummy_type
|
|
|
|
T (a); /* { dg-warning "argument missing terminating nul" } */
|
|
T (&a[0]); /* { dg-warning "nul" } */
|
|
T (&a[0] + 1); /* { dg-warning "nul" } */
|
|
T (&a[1]); /* { dg-warning "nul" } */
|
|
T (&a[v0]); /* { dg-warning "nul" } */
|
|
T (&a[v0] + 1); /* { dg-warning "nul" } */
|
|
|
|
|
|
const char b[][5] = { /* { dg-message "declared here" } */
|
|
"12", "123", "1234", "54321"
|
|
};
|
|
|
|
T (b[0]);
|
|
T (b[1]);
|
|
T (b[2]);
|
|
T (b[3]); /* { dg-warning "nul" } */
|
|
|
|
T (b[i0]);
|
|
T (b[i1]);
|
|
T (b[i2]);
|
|
T (b[i3]); /* { dg-warning "nul" } */
|
|
|
|
T (b[v0]);
|
|
|
|
T (&b[i2][i1]);
|
|
T (&b[i2][i1] + i1);
|
|
T (&b[i2][v0]);
|
|
T (&b[i2][i1] + v0);
|
|
|
|
T (&b[2][1]);
|
|
T (&b[2][1] + i1);
|
|
T (&b[2][i0]);
|
|
T (&b[2][1] + i0);
|
|
|
|
T (&b[2][1]);
|
|
T (&b[2][1] + v0);
|
|
T (&b[2][v0]);
|
|
|
|
T (&b[3][1]); /* { dg-warning "nul" } */
|
|
T (&b[3][1] + 1); /* { dg-warning "nul" } */
|
|
T (&b[3][1] + i1); /* { dg-warning "nul" } */
|
|
T (&b[3][v0]); /* { dg-warning "nul" } */
|
|
T (&b[3][1] + v0); /* { dg-warning "nul" } */
|
|
T (&b[3][v0] + v1); /* { dg-warning "nul" } */
|
|
|
|
T (&b[i3][i1]); /* { dg-warning "nul" } */
|
|
T (&b[i3][i1] + 1); /* { dg-warning "nul" } */
|
|
T (&b[i3][i1] + i1); /* { dg-warning "nul" } */
|
|
T (&b[i3][v0]); /* { dg-warning "nul" } */
|
|
T (&b[i3][i1] + v0); /* { dg-warning "nul" } */
|
|
T (&b[i3][v0] + v1); /* { dg-warning "nul" } */
|
|
|
|
T (v0 ? "" : b[0]);
|
|
T (v0 ? "" : b[1]);
|
|
T (v0 ? "" : b[2]);
|
|
T (v0 ? "" : b[3]); /* { dg-warning "nul" } */
|
|
T (v0 ? b[0] : "");
|
|
T (v0 ? b[1] : "");
|
|
T (v0 ? b[2] : "");
|
|
T (v0 ? b[3] : ""); /* { dg-warning "nul" } */
|
|
|
|
T (v0 ? "" : b[i0]);
|
|
T (v0 ? "" : b[i1]);
|
|
T (v0 ? "" : b[i2]);
|
|
/* The following is diagnosed but the warning location is wrong
|
|
(the PRE pass loses it). */
|
|
T (v0 ? "" : b[i3]); /* { dg-warning "nul" } */
|
|
T (v0 ? b[i0] : "");
|
|
T (v0 ? b[i1] : "");
|
|
T (v0 ? b[i2] : "");
|
|
T (v0 ? b[i3] : ""); /* { dg-warning "nul" } */
|
|
|
|
T (v0 ? "1234" : b[3]); /* { dg-warning "nul" } */
|
|
T (v0 ? "1234" : b[i3]); /* { dg-warning "nul" } */
|
|
T (v0 ? b[3] : "1234"); /* { dg-warning "nul" } */
|
|
T (v0 ? b[i3] : "1234"); /* { dg-warning "nul" } */
|
|
|
|
T (v0 ? a : b[3]); /* { dg-warning "nul" } */
|
|
T (v0 ? b[0] : b[2]);
|
|
T (v0 ? b[2] : b[3]); /* { dg-warning "nul" } */
|
|
T (v0 ? b[3] : b[2]); /* { dg-warning "nul" } */
|
|
|
|
T (v0 ? a : b[i3]); /* { dg-warning "nul" } */
|
|
T (v0 ? b[i0] : b[i2]);
|
|
T (v0 ? b[i2] : b[i3]); /* { dg-warning "nul" } */
|
|
T (v0 ? b[i3] : b[i2]); /* { dg-warning "nul" } */
|
|
|
|
T (v0 ? b[0] : &b[3][0] + 1); /* { dg-warning "nul" } */
|
|
T (v0 ? b[0] : &b[3][0] + i1); /* { dg-warning "nul" } */
|
|
T (v0 ? b[1] : &b[3][1] + v0); /* { dg-warning "nul" } */
|
|
|
|
T (v0 ? b[i0] : &b[i3][i0] + i1); /* { dg-warning "nul" } */
|
|
T (v0 ? b[i0] : &b[i3][i0] + i1); /* { dg-warning "nul" } */
|
|
T (v0 ? b[i1] : &b[i3][i1] + v0); /* { dg-warning "nul" } */
|
|
|
|
T (v0 ? &b[3][1] + v0 : b[2]); /* { dg-warning "nul" } */
|
|
T (v0 ? &b[3][v0] : &b[3][v1]); /* { dg-warning "nul" } */
|
|
|
|
|
|
struct A { char a[5], b[5]; };
|
|
|
|
const struct A s = { "1234", "12345" };
|
|
|
|
T (s.a);
|
|
T (&s.a[0]);
|
|
T (&s.a[0] + 1);
|
|
T (&s.a[0] + v0);
|
|
T (&s.a[1]);
|
|
T (&s.a[1] + 1);
|
|
T (&s.a[1] + v0);
|
|
|
|
T (&s.a[i0]);
|
|
T (&s.a[i0] + i1);
|
|
T (&s.a[i0] + v0);
|
|
T (&s.a[i1]);
|
|
T (&s.a[i1] + i1);
|
|
T (&s.a[i1] + v0);
|
|
|
|
T (s.b); /* { dg-warning "nul" } */
|
|
T (&s.b[0]); /* { dg-warning "nul" } */
|
|
T (&s.b[0] + 1); /* { dg-warning "nul" } */
|
|
T (&s.b[0] + v0); /* { dg-warning "nul" } */
|
|
T (&s.b[1]); /* { dg-warning "nul" } */
|
|
T (&s.b[1] + 1); /* { dg-warning "nul" } */
|
|
T (&s.b[1] + i0); /* { dg-warning "nul" } */
|
|
T (&s.b[1] + v0); /* { dg-warning "nul" } */
|
|
|
|
T (&s.b[i0]); /* { dg-warning "nul" } */
|
|
T (&s.b[i0] + i1); /* { dg-warning "nul" } */
|
|
T (&s.b[i0] + v0); /* { dg-warning "nul" } */
|
|
T (&s.b[i1]); /* { dg-warning "nul" } */
|
|
T (&s.b[i1] + i1); /* { dg-warning "nul" } */
|
|
T (&s.b[i1] + v0); /* { dg-warning "nul" } */
|
|
|
|
struct B { struct A a[2]; };
|
|
|
|
const struct B ba[] = {
|
|
{ { { "123", "12345" }, { "12345", "123" } } },
|
|
{ { { "12345", "123" }, { "123", "12345" } } },
|
|
{ { { "1", "12" }, { "123", "1234" } } },
|
|
{ { { "123", "1234" }, { "12345", "12" } } }
|
|
};
|
|
|
|
T (ba[0].a[0].a);
|
|
T (&ba[0].a[0].a[0]);
|
|
T (&ba[0].a[0].a[0] + 1);
|
|
T (&ba[0].a[0].a[0] + v0);
|
|
T (&ba[0].a[0].a[1]);
|
|
T (&ba[0].a[0].a[1] + 1);
|
|
T (&ba[0].a[0].a[1] + v0);
|
|
|
|
T (ba[0].a[0].b); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[0].b[0]); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[0].b[0] + 1); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[0].b[0] + v0); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[0].b[1]); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[0].b[1] + 1); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[0].b[1] + v0); /* { dg-warning "nul" } */
|
|
|
|
T (ba[0].a[1].a); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[1].a[0]); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[1].a[0] + 1); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[1].a[0] + v0); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[1].a[1]); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[1].a[1] + 1); /* { dg-warning "nul" } */
|
|
T (&ba[0].a[1].a[1] + v0); /* { dg-warning "nul" } */
|
|
|
|
T (ba[0].a[1].b);
|
|
T (&ba[0].a[1].b[0]);
|
|
T (&ba[0].a[1].b[0] + 1);
|
|
T (&ba[0].a[1].b[0] + v0);
|
|
T (&ba[0].a[1].b[1]);
|
|
T (&ba[0].a[1].b[1] + 1);
|
|
T (&ba[0].a[1].b[1] + v0);
|
|
|
|
|
|
T (ba[1].a[0].a); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[0].a[0]); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[0].a[0] + 1); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[0].a[0] + v0); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[0].a[1]); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[0].a[1] + 1); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[0].a[1] + v0); /* { dg-warning "nul" } */
|
|
|
|
T (ba[1].a[0].b);
|
|
T (&ba[1].a[0].b[0]);
|
|
T (&ba[1].a[0].b[0] + 1);
|
|
T (&ba[1].a[0].b[0] + v0);
|
|
T (&ba[1].a[0].b[1]);
|
|
T (&ba[1].a[0].b[1] + 1);
|
|
T (&ba[1].a[0].b[1] + v0);
|
|
|
|
T (ba[1].a[1].a);
|
|
T (&ba[1].a[1].a[0]);
|
|
T (&ba[1].a[1].a[0] + 1);
|
|
T (&ba[1].a[1].a[0] + v0);
|
|
T (&ba[1].a[1].a[1]);
|
|
T (&ba[1].a[1].a[1] + 1);
|
|
T (&ba[1].a[1].a[1] + v0);
|
|
|
|
T (ba[1].a[1].b); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[1].b[0]); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[1].b[0] + 1); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[1].b[0] + v0); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[1].b[1]); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[1].b[1] + 1); /* { dg-warning "nul" } */
|
|
T (&ba[1].a[1].b[1] + v0); /* { dg-warning "nul" } */
|
|
|
|
|
|
T (ba[2].a[0].a);
|
|
T (&ba[2].a[0].a[0]);
|
|
T (&ba[2].a[0].a[0] + 1);
|
|
T (&ba[2].a[0].a[0] + v0);
|
|
T (&ba[2].a[0].a[1]);
|
|
T (&ba[2].a[0].a[1] + 1);
|
|
T (&ba[2].a[0].a[1] + v0);
|
|
|
|
T (ba[2].a[0].b);
|
|
T (&ba[2].a[0].b[0]);
|
|
T (&ba[2].a[0].b[0] + 1);
|
|
T (&ba[2].a[0].b[0] + v0);
|
|
T (&ba[2].a[0].b[1]);
|
|
T (&ba[2].a[0].b[1] + 1);
|
|
T (&ba[2].a[0].b[1] + v0);
|
|
|
|
T (ba[2].a[1].a);
|
|
T (&ba[2].a[1].a[0]);
|
|
T (&ba[2].a[1].a[0] + 1);
|
|
T (&ba[2].a[1].a[0] + v0);
|
|
T (&ba[2].a[1].a[1]);
|
|
T (&ba[2].a[1].a[1] + 1);
|
|
T (&ba[2].a[1].a[1] + v0);
|
|
|
|
|
|
T (ba[3].a[0].a);
|
|
T (&ba[3].a[0].a[0]);
|
|
T (&ba[3].a[0].a[0] + 1);
|
|
T (&ba[3].a[0].a[0] + v0);
|
|
T (&ba[3].a[0].a[1]);
|
|
T (&ba[3].a[0].a[1] + 1);
|
|
T (&ba[3].a[0].a[1] + v0);
|
|
|
|
T (ba[3].a[0].b);
|
|
T (&ba[3].a[0].b[0]);
|
|
T (&ba[3].a[0].b[0] + 1);
|
|
T (&ba[3].a[0].b[0] + v0);
|
|
T (&ba[3].a[0].b[1]);
|
|
T (&ba[3].a[0].b[1] + 1);
|
|
T (&ba[3].a[0].b[1] + v0);
|
|
|
|
T (ba[3].a[1].a); /* { dg-warning "nul" } */
|
|
T (&ba[3].a[1].a[0]); /* { dg-warning "nul" } */
|
|
T (&ba[3].a[1].a[0] + 1); /* { dg-warning "nul" } */
|
|
T (&ba[3].a[1].a[0] + v0); /* { dg-warning "nul" } */
|
|
T (&ba[3].a[1].a[1]); /* { dg-warning "nul" } */
|
|
T (&ba[3].a[1].a[1] + 1); /* { dg-warning "nul" } */
|
|
T (&ba[3].a[1].a[1] + v0); /* { dg-warning "nul" } */
|
|
|
|
T (ba[3].a[1].b);
|
|
T (&ba[3].a[1].b[0]);
|
|
T (&ba[3].a[1].b[0] + 1);
|
|
T (&ba[3].a[1].b[0] + v0);
|
|
T (&ba[3].a[1].b[1]);
|
|
T (&ba[3].a[1].b[1] + 1);
|
|
T (&ba[3].a[1].b[1] + v0);
|
|
|
|
|
|
T (v0 ? ba[0].a[0].a : ba[0].a[0].b); /* { dg-warning "nul" } */
|
|
T (v0 ? ba[0].a[0].a : ba[0].a[0].b); /* { dg-warning "nul" } */
|
|
|
|
T (v0 ? &ba[0].a[0].a[0] : &ba[3].a[1].a[0]); /* { dg-warning "nul" } */
|
|
T (v0 ? &ba[3].a[1].a[1] : ba[0].a[0].a); /* { dg-warning "nul" } */
|
|
|
|
T (v0 ? ba[0].a[0].a : ba[0].a[1].b);
|
|
T (v0 ? ba[0].a[1].b : ba[0].a[0].a);
|
|
|
|
T (v2 ? b[1] : &b[3][1] + v2); /* { dg-warning "nul" } */
|
|
T (v2 ? &b[3][1] + v2 : b[2]); /* { dg-warning "nul" } */
|
|
T (v2 ? &b[3][v2] : &b[2][v2]); /* { dg-warning "nul" } */
|